165965252 has 6 divisors (see below), whose sum is σ = 290439198. Its totient is φ = 82982624.

The previous prime is 165965221. The next prime is 165965257. The reversal of 165965252 is 252569561.

165965252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 127599616 + 38365636 = 11296^2 + 6194^2 .

It is not an unprimeable number, because it can be changed into a prime (165965257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20745653 + ... + 20745660.

It is an arithmetic number, because the mean of its divisors is an integer number (48406533).

Almost surely, 2^165965252 is an apocalyptic number.

It is an amenable number.

165965252 is a deficient number, since it is larger than the sum of its proper divisors (124473946).

165965252 is a wasteful number, since it uses less digits than its factorization.

165965252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41491317 (or 41491315 counting only the distinct ones).

The product of its digits is 162000, while the sum is 41.

The square root of 165965252 is about 12882.7501722264. The cubic root of 165965252 is about 549.5481158826.

The spelling of 165965252 in words is "one hundred sixty-five million, nine hundred sixty-five thousand, two hundred fifty-two".